A real drummer has only two hands and two feet — programming more simultaneous hits than limbs allow breaks realism
Realistic MIDI drum programming depends on the fact that a human drummer has two hands and two feet, each committed to specific elements: (right-handed) right foot on kick, left foot on hi-hat pedal, right hand riding the hi-hat/ride crossing over, left hand on snare. So no more than two stick hits can land at once (plus the kick and hi-hat pedal, played by the feet). A common programmer error is stacking snare, tom, and hi-hat on the same beat — three stick hits, physically impossible. Related kit facts constrain co-occurrence: the ride cymbal substitutes for the hi-hats (choruses/middle-eights in pop/rock), and double-kick drums belong almost exclusively to metal, where a drummer can’t easily pedal the hi-hat and the second kick at once.
Examples
Possible: kick + hi-hat simultaneously (foot + hand). Impossible: snare + tom + hi-hat together (three sticks). Ride cymbal swaps in for hats in choruses; double kicks are a metal device.
Assessment
Given a programmed bar with simultaneous snare + floor tom + crash hits, explain why this breaks physical realism and propose a correction that keeps to two sticks.